Structures and compositions increasing the stability of peroxide actives
CA 2880654 C · Owner: The Procter & Gamble Company · Inventors: Ralston, Christopher Scott; Walden, Gary Lyle; Sunberg, Richard Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A peroxide product is provided. The peroxide product includes a package having a headspace a substrate disposed within the package and a thin layer of a composition having a peroxide active and a polyol wherein the thin layer is disposed adjacent the substrate. The peroxide product also includes at least one means for increasing the stability of the peroxide active of the composition. The thin layer of the composition has at least about 43 % of its original concentration of the peroxide active at twelve months after manufacture when stored at about 25 °C and in the absence of light.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed June 14, 2001 and granted March 28, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 14, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 14, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.